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    <title>glDrawArrays - OpenGL ES 3 Reference Pages</title>
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    <div class="refentry" id="glDrawArrays">
      <div class="titlepage"/>
      <div class="refnamediv">
        <h2>Name</h2>
        <p>glDrawArrays — render primitives from array data</p>
      </div>
      <div class="refsynopsisdiv">
        <h2>C Specification</h2>
        <div class="funcsynopsis">
          <table style="border: 0; cellspacing: 0; cellpadding: 0;" class="funcprototype-table">
            <tr>
              <td>
                <code class="funcdef">void <strong class="fsfunc">glDrawArrays</strong>(</code>
              </td>
              <td>GLenum <var class="pdparam">mode</var>, </td>
            </tr>
            <tr>
              <td> </td>
              <td>GLint <var class="pdparam">first</var>, </td>
            </tr>
            <tr>
              <td> </td>
              <td>GLsizei <var class="pdparam">count</var><code>)</code>;</td>
            </tr>
          </table>
          <div class="funcprototype-spacer"> </div>
        </div>
      </div>
      <div class="refsect1" id="parameters">
        <h2>Parameters</h2>
        <div class="variablelist">
          <dl class="variablelist">
            <dt>
              <span class="term">
                <em class="parameter">
                  <code>mode</code>
                </em>
              </span>
            </dt>
            <dd>
              <p>
                    Specifies what kind of primitives to render.
                    Symbolic constants
                    <code class="constant">GL_POINTS</code>,
                    <code class="constant">GL_LINE_STRIP</code>,
                    <code class="constant">GL_LINE_LOOP</code>,
                    <code class="constant">GL_LINES</code>,
                    <code class="constant">GL_TRIANGLE_STRIP</code>,
                    <code class="constant">GL_TRIANGLE_FAN</code> and
                    <code class="constant">GL_TRIANGLES</code>
                    are accepted.
                </p>
            </dd>
            <dt>
              <span class="term">
                <em class="parameter">
                  <code>first</code>
                </em>
              </span>
            </dt>
            <dd>
              <p>
                    Specifies the starting index in the enabled arrays.
                </p>
            </dd>
            <dt>
              <span class="term">
                <em class="parameter">
                  <code>count</code>
                </em>
              </span>
            </dt>
            <dd>
              <p>
                    Specifies the number of indices to be rendered.
                </p>
            </dd>
          </dl>
        </div>
      </div>
      <div class="refsect1" id="description">
        <h2>Description</h2>
        <p>
            <code class="function">glDrawArrays</code> specifies multiple geometric primitives
            with very few subroutine calls. It is possible to prespecify
            separate arrays of attributes and use them to
            construct a sequence of primitives with a single
            call to <code class="function">glDrawArrays</code>.
        </p>
        <p>
            When <code class="function">glDrawArrays</code> is called, it uses <em class="parameter"><code>count</code></em> sequential elements from each
            enabled array to construct a sequence of geometric primitives,
            beginning with element <em class="parameter"><code>first</code></em>. <em class="parameter"><code>mode</code></em> specifies what kind of
            primitives are constructed and how the array elements
            construct those primitives.
        </p>
        <p>
                        To enable and disable a generic vertex attribute array, call
                        <a class="citerefentry" href="glEnableVertexAttribArray.xhtml"><span class="citerefentry"><span class="refentrytitle">glEnableVertexAttribArray</span></span></a> and
                        <a class="citerefentry" href="glDisableVertexAttribArray.xhtml"><span class="citerefentry"><span class="refentrytitle">glDisableVertexAttribArray</span></span></a>.
        </p>
        <p>
                        If an array corresponding to a generic attribute required by a vertex shader
                        is not enabled, then the corresponding element is taken from the current generic
                        attribute state.
        </p>
      </div>
      <div class="refsect1" id="errors">
        <h2>Errors</h2>
        <p>
            <code class="constant">GL_INVALID_ENUM</code> is generated if <em class="parameter"><code>mode</code></em> is not an accepted value.
        </p>
        <p>
            <code class="constant">GL_INVALID_VALUE</code> is generated if <em class="parameter"><code>count</code></em> is negative.
        </p>
        <p>
            <code class="constant">GL_INVALID_OPERATION</code> is generated if a non-zero buffer object name is bound to an
            enabled array and the buffer object's data store is currently mapped.
        </p>
        <p>
                        <code class="constant">GL_INVALID_FRAMEBUFFER_OPERATION</code> is generated if the currently bound framebuffer is not
                        framebuffer complete (i.e. the return value from
                        <a class="citerefentry" href="glCheckFramebufferStatus.xhtml"><span class="citerefentry"><span class="refentrytitle">glCheckFramebufferStatus</span></span></a> is not <code class="constant">GL_FRAMEBUFFER_COMPLETE</code>).
        </p>
        <p>
                        <code class="constant">GL_INVALID_OPERATION</code> is generated if recording the vertices of a primitive to the buffer objects being
                        used for transform feedback purposes would result in either exceeding the limits of any buffer object’s size,
                        or in exceeding the end position <em class="parameter"><code>offset</code></em> + <em class="parameter"><code>size</code></em> - 1, as set
                        by <a class="citerefentry" href="glBindBufferRange.xhtml"><span class="citerefentry"><span class="refentrytitle">glBindBufferRange</span></span></a>.
                </p>
      </div>
      <div class="refsect1" id="versions">
        <h2>API Version Support</h2>
        <div class="informaltable">
          <table style="border-collapse: collapse; border-top: 2px solid ; border-bottom: 2px solid ; border-left: 2px solid ; border-right: 2px solid ; ">
            <colgroup>
              <col style="text-align: left; "/>
              <col style="text-align: center; " class="firstvers"/>
              <col style="text-align: center; " class="lastvers"/>
            </colgroup>
            <thead>
              <tr>
                <th style="text-align: left; border-right: 2px solid ; ">
                 
            </th>
                <th style="text-align: center; border-bottom: 2px solid ; " colspan="2">
                <span class="bold"><strong>OpenGL ES API Version</strong></span>
            </th>
              </tr>
              <tr>
                <th style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">
                <span class="bold"><strong>Function Name</strong></span>
            </th>
                <th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
                <span class="bold"><strong>2.0</strong></span>
            </th>
                <th style="text-align: center; border-bottom: 2px solid ; ">
                <span class="bold"><strong>3.0</strong></span>
            </th>
              </tr>
            </thead>
            <tbody>
              <tr>
                <td style="text-align: left; border-right: 2px solid ; ">glDrawArrays</td>
                <td style="text-align: center; border-right: 2px solid ; ">✔</td>
                <td style="text-align: center; ">✔</td>
              </tr>
            </tbody>
          </table>
        </div>
      </div>
      <div class="refsect1" id="seealso">
        <h2>See Also</h2>
        <p>
            <a class="citerefentry" href="glCheckFramebufferStatus.xhtml"><span class="citerefentry"><span class="refentrytitle">glCheckFramebufferStatus</span></span></a>,
                        <a class="citerefentry" href="glDisableVertexAttribArray.xhtml"><span class="citerefentry"><span class="refentrytitle">glDisableVertexAttribArray</span></span></a>,
            <a class="citerefentry" href="glDrawArraysInstanced.xhtml"><span class="citerefentry"><span class="refentrytitle">glDrawArraysInstanced</span></span></a>,
            <a class="citerefentry" href="glDrawElements.xhtml"><span class="citerefentry"><span class="refentrytitle">glDrawElements</span></span></a>,
            <a class="citerefentry" href="glDrawElementsInstanced.xhtml"><span class="citerefentry"><span class="refentrytitle">glDrawElementsInstanced</span></span></a>,
            <a class="citerefentry" href="glDrawRangeElements.xhtml"><span class="citerefentry"><span class="refentrytitle">glDrawRangeElements</span></span></a>,
                        <a class="citerefentry" href="glEnableVertexAttribArray.xhtml"><span class="citerefentry"><span class="refentrytitle">glEnableVertexAttribArray</span></span></a>
        </p>
      </div>
      <div class="refsect1" id="Copyright">
        <h2>Copyright</h2>
        <p>
            Copyright <span class="trademark"/>© 1991-2006 Silicon Graphics, Inc.
            Copyright <span class="trademark"/>© 2010-2014 Khronos Group.
            This document is licensed under the SGI Free Software B License.
            For details, see
            <a class="link" href="http://oss.sgi.com/projects/FreeB/" target="_top">http://oss.sgi.com/projects/FreeB/</a>.
        </p>
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